Notching
Notching , noun
1.
The act of making notches; the act of cutting into small hollows.
2.
The small hollow, or hollows, cut; a notch or notches.
3.
(Carpentry) A method of joining timbers, scantling, etc., by notching them, as at the ends, and overlapping or interlocking the notched portions.
4.
(Engineering) A method of excavating, as in a bank, by a series of cuttings side by side. See also Gulleting.